﻿using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApp2
{
    class Math
    {
        public static void add(int a,int b)
        {
            Console.WriteLine("a+b={0}",a + b);
        }
        public static void add(int a,int b,int c)
        {
            Console.WriteLine("a+b+c={0}", a + b + c);
        }
    }
}
